use the standard definition of LIB_SPEC. */
#undef LIB_SPEC
-#undef ASM_FILE_START
-#define ASM_FILE_START(FILE) \
- output_file_directive ((FILE), main_input_filename)
+/* Emit a .file directive. */
+#define ASM_FILE_START_FILE_DIRECTIVE true
/* Support the ctors and dtors sections for g++. */